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SPEC. No. B18344 00804S DATE MAR. 19, '08 ＳＰＥＣＩＦＩＣＡＴＩＯＮＳ ＥＮＧＩＮＥ－ＤＲＩＶＥＮ ＭＯＤＥＬ ＡＣ ＧＥＮＥＲＡＴＯＲ ＤＣＡ－２５ＵＳＥI HEAD OFFICE 2-8-5 Nihonbashi-horidomecho, Chuo-ku, Tokyo, 103-8566 Japan TEL +81 - 3 - 6861 - 1111 FAX +81 - 3 - 6861 - 1181 １． ＡＰＰＬＩＣＡＴＩＯＮ 1.1 This specification covers the water-cooled, diesel engine driven AC generator model DCA-25USEI (hereafter referred to as generating set). 1.2 The generating set shall be designed, manufactured and tested in accordance with the latest standards of ISO 8528. Other matters which are not specifically mentioned in the above standards shall be subject to Denyo Co., Ltd.'s production regulations. ２． ＧＥＮＥＲＡＬ 2.1 Materials and Workmanship The materials used in the manufacture of this equipment shall be of the high quality, and shall be free from defects and imperfections. All materials and apparatus not manufactured by Denyo Co.,Ltd. shall be the products of well-known manufacturers. The workmanship shall be of the high grade and in accordance with the most efficient, up-to-date procedures. 2.2 Change Minor changes after the final design may be made by Denyo Co., Ltd. without prior notice to the purchaser. In case of major changes or additional equipment which may result in an increase or decrease of equipment's cost, modifications shall be made in writing and agreed to by both parties prior to production and shall constitute an amendment to these specifications. 2.3 Tests and Inspection Routine tests and inspections shall be final in our factory. If any tests and inspections beyond the scope of ISO 8528 standard commercial procedures are required by the purchaser, charges for such inspections or tests shall be added to our estimate. Conditions of any such tests and inspections shall be mutually agreed upon between both parties. 2.4 Ambient Conditions The generating set should meet the following conditions: (1) Ambient temperature : -5ﾟC or higher, 40ﾟC or lower (2) Altitude : Up to 1000 m above sea level (3) Relative humidity : 85 % or lower (4) Place of installation : Indoor and outdoor - 1 - ３． ＳＴＲＵＣＴＵＲＥ The machine possesses a solid structure, and is comprised of a water cooled diesel engine and a generator, which are directly coupled on a common base. A coupling housing is employed to connect the generator to the engine. Firm coupling of the engine and generator is ensured by tight connection of the housing exterior. The rotating section of the generator is directly coupled to the flywheel of the engine with a flexible coupling plates made of laminated thin steel. The generator is of single bearing construction. The standard generator is of the brushless type. A heavy gauge steel bonnet and side door completely cover the engine, generator and accessories, protecting the unit from effects of weather or possible handling damages at the site. A lifting hook is attached to the common base, and it extends to the balance point through the bonnet top. ４． ＳＰＥＣＩＦＩＣＡＴＩＯＮＳ 4.1 AC Generator Generator model Type Excitation Continuous duty rating Voltage Current Frequency Speed Direction of rotation Power factor Phase No. of Pole Winding connection Insulation system Cooling system Protection type Rating : : : : : : : : : : : : : : : : : DF-0270I Rotating-field, synchronous generator Brushless type (with AVR) 20 kVA 380/ 400/ 415 V 30.4/28.9/27.8 A 50 Hz 1500 min － １ Clockwise (viewed from the coupling side) 0.8 (lagging) 3 (4 wires) 4 Star Class F Self-ventilation IP20 Continuous - ＮＯＴＥ Continuous Duty Rating : The generating set is designed for continuous operation under normal load conditions with an overload capacity (110% of rating capacity) up to the standby rating for intermittent periods. - 2 - 4.2 Diesel Engine Maker & Model Type Rated output No. of cylinders Bore × stroke Total displacement Direction of rotation Governor Cooling system Air cleaner Lubricating system Starting motor Charging generator Battery Lubricating oil Fuel : ISUZU 4LE2 : 4 cycle, water cooled diesel engine, direct injection : 19.1 kW, 1500 min - 1 : 4L : 85 mm × 96 mm : 2.179 L : Clockwise (viewed from the fan side) : Mechanical all speed governor : Water cooling by radiator with fan : Dry paper element type : Gear pump : 12 V – 2.0 kW : 12 V – 20 A : 12V-65Ah (80D26R) × 1 : API service class CD or higher : Diesel fuel (ASTM No.2 or equivalent) - ＮＯＴＥ “Rated Output” is in accordance with ISO 3046-1 standard ambient conditions. 4.3 Voltage Regulation The voltage regulation from rated load to no load under a rated power factor shall be with in ±0.5 % of rated voltage. 4.4 Speed Regulation The speed regulation from rated load to no load under a rated power factor shall be with in 5 % of rated speed. 4.5 Limits of Temperature Limits of temperature rise of the generator shall be in accordance with relevant IEC34-1 standards, based on ambient temperature not exceeding 40℃, and shall not exceed the following: Armature windings Field windings Insulation class F Insulation class F - 3 - 4.6 Dielectric Strength Test The strength of the windings of the generator and control box shall meet the specifications of the high voltage test according to IEC 34-1 standards: Armature windings Field windings Control box - Grounding Grounding Grounding AC 1830V AC 1500V AC 1500V (one minute) (one minute) (one minute) 4.7 Sound Level The average rated load sound is limited within 50 dB (A) at a distance of 7 m. 4.8 Dimension Length Width Height : approx. 1770 mm : approx. 790 mm : approx. 1170 mm 4.9 Weight Dry weight Total weight : approx. : approx. 785 kg 885 kg - 4 - ５． ＩＮＳＴＲＵＭＥＮＴ ＰＡＮＥＬ ＡＮＤ ＳＹＳＴＥＭ 5.1 Generator Control Panel The following meters and apparatus are mounted on the control panel: Frequency meter AC Ammeter Ammeter change-over switch AC Voltmeter Voltage regulator Circuit breaker (3-Phase molded case circuit breaker) Earth leakage relay Panel light switch Panel light Over current relay (in the control box) 1 1 1 1 1 1 1 1 1 1 pc. pc. pc. pc. pc. pc. pc. pc. pc. pc. 5.2 Engine Control Panel The following meters, gauges and other control equipment are mounted on the panel: Engine Indicator Engine speed / Oil pressure / Water temp. / Battery charging voltage / Integrating time Fuel level indicator Warning lamp (Low lubricating oil pressure, High water temp, Air element blinding, High fuel filter water level, Over speed, Fuel level failure) Starter switch Preheat lamp 1 set 1 pc. 1 pc. 5.3 Output Terminal Circuit breaker (for 3-phase receptacle) Circuit breaker (for 1-phase receptacle) 3-Phase receptacle (3P+N+PE, 32A) 1-Phase receptacle (2P+PE, 32A) PE earthing terminal - 5 - 1 3 1 3 1 pc. pcs. pc. pcs. pc. 5.4 Safety Controls The generating set shall be equipped with automatic safety controls which will shut down the engine in the event of any abnormal condition, such as : Engine shut down Circuit breaker will trip ○ － － ○ － － ○ － ○ ○ － ○ － ○ － Earth leakage － ○ ○ Over speed ○ － ○ Fuel level failure － － ○ － ○ － ○ Side door open Emergency stop button Low lubricating oil pressure High jacket water temp. Over current of generator Air element － blinding High fuel filter － water level Mark ○: Operate Warning lamp Mark －: Not operate ６． ＣＡＰＡＣＩＴＹ Cooling water capacity Lube oil capacity Fuel tank capacity Environment tank capacity : : : : approx. approx. approx. approx. 6.4 8.5 92 138 L L L L ７． ＡＴＴＡＣＨＭＥＮＴ Parts list Instruction manual Instruction manual (Engine) Cancellation connector 1 1 1 1 set set set pc. ８． ＣＯＡＴＩＮＧ The color of the generator proper and the engine shall be the manufacturer's standard colors, and that of the bonnet shall be Munsell 7.5RP5/8, and 10PB4/1. - 6 -